对二甲苯：海内外供应偏紧，趋势走强，月差正套，PTA：成本支撑，基差月差正套，MEG：伊朗多套装置停车，短期偏强

1. Report Industry Investment Rating No relevant content provided. 2. Core Viewpoints of the Report - PX: Due to intensified geopolitical conflicts, both domestic and imported PX supplies are tight, leading to a continuous upward trend. It is recommended to go long on PX and short on SC. The PXN spread has expanded to $261/ton, and short - term calendar spread arbitrage (buy near - term and sell far - term) is advisable [7][8]. - PTA: Supported by cost factors, both the single - side position and the calendar and basis spreads are strong. Despite increased maintenance by polyester bottle - chip and short - fiber factories, PTA supply remains tight, causing the basis to strengthen significantly [8]. - MEG: With the shutdown of Iranian ethylene glycol plants, MEG is expected to be in a short - term upward - trending and volatile state. It is recommended to reduce the position of going long on PTA and short on MEG. Attention should be paid to the operating status and shipping changes of Iranian ethylene glycol plants under the Israel - Iran conflict [8]. 3. Summary by Related Catalogs 3.1 Fundamental Tracking - Price and Variation: On June 19, 2025, the closing prices of PX, PTA, MEG, PF, and SC were 7094, 4988, 4539, 6794, and 3998 respectively, with daily changes of 1.5%, 1.5%, 1.5%, 1.6%, and 2.0% [1]. - Calendar Spread: The PX (9 - 1), PTA (9 - 1), MEG (9 - 1), PF(7 - 8), and PX - EB07 calendar spreads on June 19 were 272, 206, 23, 74, and - 469 respectively, with daily changes of 52, 38, 7, 28, and 50 [1]. - Inter - commodity Spread: The PTA09 - 0.65PX09, PTA09 - MEG09, PTA07 - PF07, PF07 processing margin, and PTA09 - LU09 spreads on June 19 were 377, 449, - 1636, 887, and 1040 respectively, with daily changes of 5, 6, - 26, 20, and 12 [1]. - Basis and Other Spreads: The PX, PTA, MEG, PF basis, and PX - naphtha spreads on June 19 were 251, 270, 85, - 4, and 255 respectively, with daily changes of - 106, - 60, - 1, - 48, and no change [1]. - Warehouse Receipts: On June 19, the PTA, ethylene glycol, short - fiber, PX, and SC warehouse receipts were 37468, 6052, 5464, 0, and 4029000 respectively, with daily changes of - 43123, no change, no change, - 5, and no change [1]. 3.2 Market Overview - PX Market: On June 19, the PX price continued to rise, with an estimated price of $904/ton, up $16 from the previous day. The PX - naphtha spread expanded to $261.38/ton. The PTA operating rate in China dropped from 82.6% to 79.1% due to plant maintenance, while the polyester operating rate was estimated at 92%, a 1.2% increase from the previous week [3][4]. - PTA Market: A 2.2 - million - ton PTA plant in the Northeast has shut down, and a 4.5 - million - ton plant in the South is gradually shutting down for about two months of maintenance. The PTA operating rate has dropped, and the Honggang Petrochemical Phase 3 2.5 - million - ton plant has started production and is operating at over 90% capacity [4][5]. - MEG Market: Two ethylene glycol plants in Saudi Arabia with a combined capacity of 1.4 million tons/year are scheduled to restart soon. As of June 19, the overall operating rate of ethylene glycol in mainland China was 70.33% (up 4.08% from the previous period), and a new 600,000 - ton/year synthetic - gas - based ethylene glycol plant in Sichuan has been put into production [5][6]. - Polyester Market: The operating rate of major domestic polyester industrial yarn manufacturers has increased slightly, with an overall theoretical operating rate of about 73.2%. As of Thursday, the polyester operating rate in mainland China was around 92%. On June 19, the sales of direct - spun polyester staple fibers were average, with an average production - sales ratio of 54%, and the sales of polyester yarn in Jiangsu and Zhejiang were light, with an average production - sales ratio of about 30% [6][7]. 3.3 Trend Intensity - The trend intensity of PX is 2, while that of PTA and MEG is 1 [8].